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PHYSICAL REVIEW E 84, 011505 (2011) Glassy dynamics and hysteresis in a linear system of orientable hard rods
 

Summary: PHYSICAL REVIEW E 84, 011505 (2011)
Glassy dynamics and hysteresis in a linear system of orientable hard rods
Jeferson J. Arenzon,1,*
Deepak Dhar,2,
and Ronald Dickman3,
1
Instituto de F´isica and National Institute of Science and Technology for Complex Systems, Universidade Federal do Rio Grande do Sul C.P.
15051, 91501-970 Porto Alegre, RS, Brazil
2
Department of Theoretical Physics Tata Institute of Fundamental Research Homi Bhabha Road, Mumbai 400005, India
3
Departamento de F´isica, Instituto de Ci^encias Exatas, and National Institute of Science and Technology for Complex Systems,
Universidade Federal de Minas Gerais C.P. 702, 30123-970 Belo Horizonte, MG, Brazil
(Received 13 June 2011; published 25 July 2011)
We study the dynamics of a one-dimensional fluid of orientable hard rectangles with a non-coarse-grained
microscopic mechanism of facilitation. The length occupied by a rectangle depends on its orientation, which is
a discrete variable coupled to an external field. The equilibrium properties of our model are essentially those
of the Tonks gas, but at high densities the orientational degrees of freedom become effectively frozen due to
jamming. This is a simple analytically tractable model of the glassy phase. Under a cyclic variation of the
pressure, hysteresis is observed. Following a pressure quench, the orientational persistence exhibits a two-stage

  

Source: Arenzon, Jeferson J. - Instituto de Física, Universidade Federal do Rio Grande do Sul

 

Collections: Physics